5644718739 has 32 divisors (see below), whose sum is σ = 9126969600. Its totient is φ = 3419470080.

The previous prime is 5644718713. The next prime is 5644718789. The reversal of 5644718739 is 9378174465.

5644718739 is a `hidden beast` number, since 5 + 64 + 471 + 87 + 39 = 666.

It is not a de Polignac number, because 5644718739 - 2¹² = 5644714643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5644718789) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1224012 + ... + 1228614.

It is an arithmetic number, because the mean of its divisors is an integer number (285217800).

Almost surely, 2^5644718739 is an apocalyptic number.

5644718739 is a deficient number, since it is larger than the sum of its proper divisors (3482250861).

5644718739 is a wasteful number, since it uses less digits than its factorization.

5644718739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8752 (or 8746 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The square root of 5644718739 is about 75131.3432529993. The cubic root of 5644718739 is about 1780.5223752998.

The spelling of 5644718739 in words is "five billion, six hundred forty-four million, seven hundred eighteen thousand, seven hundred thirty-nine".